What are some alternatives?
memcached - High-performance, distributed memory object caching system
ArangoDB - A distributed open-source database with a flexible data model for documents, graphs, and key-values.
Aerospike - Aerospike is a high-performing NoSQL database supporting high transaction volumes with low latency.
Redis - Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.
BoltDB - An embedded key/value database for Go. Contribute to boltdb/bolt development by creating an account on GitHub.
MongoDB - MongoDB (from "humongous") is a scalable, high-performance, open source NoSQL database.